diff --git a/ChangeLog b/ChangeLog
index 9311919681..423bcbbeb3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Jul 31 22:50:51 2013  Kouhei Sutou  <kou@cozmixng.org>
+
+	* test/rexml/test_notationdecl_parsetest.rb: Add tests that focus
+	  system literal in external ID system notation declaration.
+
 Wed Jul 31 22:36:21 2013  Tanaka Akira  <akr@fsij.org>
 
 	* bignum.c (bary_cmp): Extracted from rb_big_cmp.
diff --git a/test/rexml/test_notationdecl_parsetest.rb b/test/rexml/test_notationdecl_parsetest.rb
index 25baf1f551..b9c4b22817 100644
--- a/test/rexml/test_notationdecl_parsetest.rb
+++ b/test/rexml/test_notationdecl_parsetest.rb
@@ -24,6 +24,22 @@ class TestNotationDecl < Test::Unit::TestCase
   end
 
   class TestExternalID < self
+    class TestSystem < self
+      def test_single_quote
+        doctype = parse(<<-INTERNAL_SUBSET)
+<!NOTATION name SYSTEM 'system-literal'>
+        INTERNAL_SUBSET
+        assert_equal("system-literal", doctype.notation("name").system)
+      end
+
+      def test_double_quote
+        doctype = parse(<<-INTERNAL_SUBSET)
+<!NOTATION name SYSTEM "system-literal">
+        INTERNAL_SUBSET
+        assert_equal("system-literal", doctype.notation("name").system)
+      end
+    end
+
     class TestPublic < self
       class TestPublicIDLiteral < self
         def test_single_quote